Home / 8,645.09-11,931.77-6,778.85

Finding the Fourth Proportional to 8,645.09, 11,931.77 and 6,778.85

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Solution

The fourth proportional to 8,645.09, 11,931.77 and 6,778.85 is: 9,356.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.09 : 11,931.77 = 6,778.85 : x
  2. Step 2: Convert to fraction form
    8,645.09/11,931.77 = 6,778.85/x
  3. Step 3: Cross multiply
    8,645.09x = 11,931.77 × 6,778.85
  4. Step 4: Simplify right side
    8,645.09x = 80,883,636.35
  5. Step 5: Solve for x
    x = 80,883,636.35/8,645.09
  6. Step 6: Final answer
    x = 9,356.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.